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      Association of depressive and anxiety symptoms with adverse events in Dutch chronic kidney disease patients: a prospective cohort study

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          Abstract

          Background

          Depressive symptoms have been reported to be associated with adverse clinical outcome in patients with chronic kidney disease (CKD) not on dialysis. This association has not been examined in Europe. Anxiety and depressive symptoms often co-occur. However, as yet there are no data concerning a possible association of anxiety symptoms with adverse clinical outcome. We examined the association of depressive and anxiety symptoms with adverse clinical outcome in Dutch CKD patients not on dialysis.

          Methods

          In this 3-year follow-up prospective cohort study, CKD patients not on dialysis with an estimated glomerular filtration rate (eGFR) ≤ 35 ml/min/1.73 m 2 from an urban teaching hospital were selected. Symptoms of depression and anxiety were evaluated using the Beck Depression Inventory (BDI) and the Beck Anxiety Inventory (BAI). Cox proportional hazards models were used to calculate hazard ratio’s (HRs) with a composite event of death, initiation of dialysis, and hospitalization as outcome. HRs were adjusted for age, gender, diabetes, cardiovascular disease and eGFR.

          Results

          Of 100 included CKD patients depressive and anxiety symptoms were present in 34 and 31 %, respectively. Adjusted HRs for the composite event for patients with depressive and anxiety symptoms were 2.0 (95 % confidence interval (CI) 1.2–3.5) and 1.6 (95 % CI 0.9–2.7), respectively. Twenty three patients had both depressive and anxiety symptoms of whom adjusted HRs were 2.2 (95 % CI 1.2–4.0) for a composite event.

          Conclusions

          Depressive and anxiety symptoms are common in patients with CKD in The Netherlands. Depressive symptoms are associated with an increased risk of poor clinical outcome. Anxiety symptoms show a trend for an increased risk of poor clinical outcome. There seems to be no additive effect of anxiety symptoms in addition to depressive symptoms with regard to poor clinical outcome.

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          Chronic kidney disease awareness, prevalence, and trends among U.S. adults, 1999 to 2000.

          Josef Coresh, Danita D. Byrd-Holt, Brad C. Astor … (2005)
          The incidence of kidney failure treatment in the United States increased 57% from 1991 to 2000. Chronic kidney disease (CKD) prevalence was 11% among U.S. adults surveyed in 1988 to 1994. The objective of this study was to estimate awareness of CKD in the U.S. population during 1999 to 2000 and to determine whether the prevalence of CKD in the United States increased compared with 1988 to 1994. Analysis was conducted of nationally representative samples of noninstitutionalized adults, aged 20 yr and older, in two National Health and Nutrition Examination Surveys conducted in 1988 to 1994 (n = 15,488) and 1999 to 2000 (n = 4101) for prevalence +/- SE. Awareness of CKD is self-reported. Kidney function (GFR), kidney damage (microalbuminuria or greater), and stages of CKD (GFR and albuminuria) were estimated from calibrated serum creatinine, spot urine albumin to creatinine ratio (ACR), age, gender, and race. GFR was estimated using the simplified Modification of Diet in Renal Disease Study equation. Self-reported awareness of weak or failing kidneys in 1999 to 2000 was strongly associated with decreased kidney function and albuminuria but was low even in the presence of both conditions. Only 24.3 +/- 6.4% of patients at GFR 15 to 59 ml/min per 1.73 m(2) and albuminuria were aware of CKD compared with 1.1 +/- 0.3% at GFR of 90 ml/min per 1.73 m(2) or greater and no microalbuminuria. At moderately decreased kidney function (GFR 30 to 59 ml/min per 1.73 m(2)), awareness was much lower among women than men (2.9 +/- 1.6 versus 17.9 +/- 5.9%; P = 0.008). The prevalence of moderately or severely decreased kidney function (GFR 15 to 59 ml/min per 1.73 m(2)) remained stable over the past decade (4.4 +/- 0.3% in 1988 to 1994 and 3.8 +/- 0.4% in 1999 to 2000; P = 0.23). At the same time, the prevalence of albuminuria (ACR >/= 30 mg/g) in single spot urine increased from 8.2 +/- 0.4% to 10.1 +/- 0.7% (P = 0.01). Overall CKD prevalence was similar in both surveys (9% using ACR > 30 mg/g for persistent microalbuminuria; 11% in 1988 to 1994 and 12% in 1999 to 2000 using gender-specific ACR cutoffs). Despite a high prevalence, CKD awareness in the U.S. population is low. In contrast to the dramatic increase in treated kidney failure, overall CKD prevalence in the U.S. population has been relatively stable.
          Article 0 comments Cited 168 times – based on 0 reviews     Review now
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            Time-dependent bias was common in survival analyses published in leading clinical journals.

            J Forster, Ian Davis, Carl van Colen … (2004)
            In survival analysis, "baseline immeasurable" time-dependent factors cannot be recorded at baseline, and change value after patient observation starts. Time-dependent bias can occur if such variables are not analyzed appropriately. This study sought to determine the prevalence of such time-dependent bias in highly-cited medical journals. We searched Medline databases to identify all observational studies that used a survival analysis in American Journal of Medicine, Annals of Internal Medicine, Archives of Internal Medicine, British Medical Journal, Chest, Circulation, Journal of the American Medical Association, Lancet, and New England Journal of Medicine between 1998 and 2002. Studies with "baseline immeasurable" time-dependent factors were susceptible to time-dependent bias if a time-dependent covariate analysis was not used. Of 682 eligible studies, 127 (18.6%, 95% CI 15.8-21.8%) contained a "baseline immeasurable" time-dependent factor and 52 (7.6% [5.8-9.9%] of all survival analyses/40.9% [32.3-50.0%] of studies with a time-dependent factor) were susceptible to time-dependent bias. In 35 studies (5.1% [3.7-7.1%]/27.6% [20.5-35.9%]), the bias affected a variable highlighted in the study abstract and correction of the bias could have qualitatively changed the study's conclusion in over half of studies. In medical journals, time-dependent bias is concerningly common and frequently affects key factors and the study's conclusion.
            Article 0 comments Cited 83 times – based on 0 reviews     Review now
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              Anxiety disorders in adults treated by hemodialysis: a single-center study.

              Paul L Kimmel, Jeremy D. Coplan, Clinton Brown … (2008)
              Anxiety is a complicating comorbid diagnosis in many patients with medical illnesses. In patients with end-stage renal disease (ESRD), anxiety disorders often are perceived to represent symptoms of depression rather than independent conditions and therefore have been relatively understudied in this medical population. To evaluate the psychosocial impact of anxiety disorders on patients with ESRD, we sought to identify the rates of these disorders in a sample of patients receiving hemodialysis at a single center by using a structured clinical interview. We also compared a commonly used screening measure, the Hospital Anxiety and Depression Scale (HADS), with these clinical diagnoses to determine the measure's criterion validity or ability to predict a psychiatric diagnosis in ESRD populations. Finally, we examined the relationship between anxiety diagnosis and perceptions of quality of life (QOL) and health status. A sample of 70 randomly selected hemodialysis patients from an urban metropolitan center. Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) Axis I Diagnosis (SCID-I). HADS and Kidney Disease Quality of Life Short Form. Using the SCID, 71% of the sample received a DSM-IV Axis I diagnosis, with 45.7% of subjects meeting criteria for an anxiety disorder and 40% meeting criteria for a mood disorder. The concordance between DSM-IV anxiety disorders and anxiety scores acquired by using the HADS was not significant. Thus, although the HADS may provide an acceptable measure of overall "psychic distress" compared against the SCID-I, it has poor predictive power for anxiety diagnoses in patients with ESRD. Additionally, the presence of an anxiety disorder was associated with an overall perceived lower QOL (t = 2.4; P < 0.05). Single-center study and a population not representative of US demographics. A substantial proportion of participating patients met criteria for an anxiety disorder. The utility of the HADS as a screening tool for anxiety in patients with ESRD should be questioned. The finding that anxiety disorders negatively impact on QOL and are not merely manifestations of depression in patients with ESRD emphasizes the importance of accurate diagnosis and effective treatment. Strategic options are necessary to improve the diagnosis of anxiety disorders, potentially enhancing QOL and medical outcome in patients with ESRD.
              Article 0 comments Cited 60 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Wim L. Loosman: +31 (0)20 5108790 , b.loosman@slaz.nl
                Marcus A. Rottier: markrottier@gmail.com
                Adriaan Honig: a.honig@slaz.nl
                Carl E.H. Siegert: c.siegert@slaz.nl
                Journal
                Journal ID (nlm-ta): BMC Nephrol
                Journal ID (iso-abbrev): BMC Nephrol
                Title: BMC Nephrology
                Publisher: BioMed Central (London )
                ISSN (Electronic): 1471-2369
                Publication date (Electronic): 21 September 2015
                Publication date PMC-release: 21 September 2015
                Publication date Collection: 2015
                Volume: 16
                Electronic Location Identifier: 155
                Affiliations
                [ ]Department of Nephrology, Sint Lucas Andreas Hospital, Amsterdam, The Netherlands
                [ ]Department of Psychiatry, Sint Lucas Andreas Hospital, Amsterdam, The Netherlands
                [ ]Department of Psychiatry, VU University Medical Center, Amsterdam, The Netherlands
                Article
                Publisher ID: 149
                DOI: 10.1186/s12882-015-0149-7
                PMC ID: 4578821
                PubMed ID: 26390864
                SO-VID: e44e3546-6d54-4270-93e2-b2449922ea91
                Copyright © © Loosman et al. 2015
                License:

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

                History
                Date received : 7 May 2015
                Date accepted : 10 September 2015
                Categories
                Subject: Research Article
                Custom metadata
                issue-copyright-statement © The Author(s) 2015

                ScienceOpen disciplines: Nephrology
                Keywords: depression,anxiety,mortality,hospitalization,chronic kidney disease
                Data availability:
                ScienceOpen disciplines: Nephrology
                Keywords: depression, anxiety, mortality, hospitalization, chronic kidney disease

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